Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4911764 | Composite Structures | 2017 | 38 Pages |
Abstract
In this study, a three-dimensional (3D) progressive failure material model was developed for glass fiber reinforced thermoplastic (GFRP) composites to predict the nonlinear mechanical response under impact loads. For the formulation of progressive failure, the material property degradation model (MDM) was constructed using a continuum damage mechanics (CDM) model based on the 3D Hashin failure criteria. The proposed progressive failure formulations were implemented in the user-defined material model (UMAT) in the commercial nonlinear finite element analysis (FEA) software LS-Dyna. Then, the progressive failure model was verified experimentally with flexural and impact tests. Finally, it was found that the proposed 3D progressive failure model can be used to predict not only damage progression and impact behavior, but also interlaminar delamination.
Keywords
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Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Do-Hyoung Kim, Ku-Hyun Jung, In-Gyu Lee, Hee-June Kim, Hak-Sung Kim,